What was found
WHILE IN FOR C-CHECK, MAINTENANCE REMOVED CENTER CELL REAR SPAR WEB FOR ACCESS OF 870 TENSION STRAP. AFTER WEB REMOVAL, FOUND CORROSION ON WEB TO BE OUT OF LIMITS PER SRM 57-10-1. REPLACED BS 870 WEB PER SRM 51-30-2, 51-10-1, 51-10-2, 51-10-6, 51-30-5, 51-20-4 AND MM 51-20-151.